GB 28381-2012 PDF English
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GB 28381-2012: Minimum allowable values of energy efficiency and evaluating values of energy conservation for centrifugal blower
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB28381-2012
ICS 27.010
F 01
NATIONAL STANDARD
GB 28381–2012
Minimum allowable values of energy efficiency and
evaluating values of energy conservation for
centrifugal blower
Issued on. MAY 11, 2012
Implemented on. SEPTEMBER 01, 2012
Issued by.
General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 4
4 Classification of products... 5
5 Technical requirements... 5
6 Test method... 13
References and Original Chinese Documents... 14
Foreword
For the purpose of this standard, subclause 5.3 is normative and the other
clauses/subclauses are informative.
This standard is drafted in accordance with the rules of GB/T 1.1 – 2009.
This standard was proposed by the Department of Resource Conservation and
Environment Protection of the National Development and Reform Commission.
This standard is under the jurisdiction of National Technical Committee of Energy
Fundamentals and Management of Standardization Administration of China (SAC/TC
20).
Drafting organizations of this standard include Shenyang Blowers (Group) Co., Ltd,
China National Institute of Standardization, Shaanxi Blowers (Group) Co., Ltd,
Chongqing General Industry (Group) Co., Ltd, Nantong Dart-Pollrich Fan Co., Ltd,
Shandong Zhangqiu Blower Co., Ltd, Zhejiang Shangfeng Industrial Holding Ltd, and
Jiangsu Jintongling Fan Co., Ltd.
The chief drafting staffs of this standard include Chen Fengyi, Mei Yuanping, Zhao
Yuejin, Zheng Hua, Li Baohou, Liao Yulong, Li Junhua, Xu Baohua, Zhu Mengbo and
Cao Ping.
Minimum allowable values of energy efficiency and evaluating
values of energy conservation for centrifugal blower
1 Scope
This standard specifies the minimum allowable values of energy efficiency,
evaluating values of energy conservation, and test methods for centrifugal blowers.
This standard applies to single-stage dual-support low-speed centrifugal blowers;
multi-stage low-speed centrifugal blowers; single-stage dual-support high-speed
centrifugal blowers (including single-side impeller of dual-inlet blower); and
multi-stage high-speed centrifugal blowers.
2 Normative references
The following normative documents are indispensable for application of this standard.
For dated normative documents, only the edition dated with the day applies to this
standard. For undated normative documents, the latest edition (including all
amendments) applies to this standard.
JB/T 2977 Technical terms for industry fans, turbo-blowers and compressors
JB/T 3165 Thermodynamic performance test for centrifugal & axial blower and
compressor
3 Terms and definitions
The following definitions apply to this standard, in addition to those defined in JB/T
3165 and in JB/T 2977.
3.1
Minimum allowable values of energy efficiency for centrifugal blower
The minimum guaranteed allowable values of variable efficiency for centrifugal
blower, under the specified standard conditions of testing.
4 Classification of products
By the number of stages, structure and number of revolutions, a centrifugal blower
may be classifed as single-stage cantilever-fitted low-speed centrifugal blower;
single-stage dual-support low-speed centrifugal blower; multi-stage low-speed
5 Technical requirements
5.1 Basic requirements
Product design, manufacturing and quality of centrifugal blower shall comply with
provisions of JB/T 7258.
5.2 The variable efficiency of centrifugal blower shall be calculated according
to the following equation.
5.3 Minimum allowable values of energy efficiency for centrifugal blower
5.3.1 The highest polytropic efficiency ηpol, within the operating range of
centrifugal blower is defined as the minimum allowable values of energy efficiency.
6 Test method
A centrifugal blower shall be tested for the performance in accordance with JB/T
3165.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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